Summary
In this chapter, you learned the fundamentals of IP and its addressing structure. IP can communicate across any set of interconnected networks, but is not a reliable datagram service; it is a best-effort delivery. An IP address is 32 bits, which includes a network address and a host address.
You also learned about subnets, subnet masking, variable-length masking, and why they are necessary. Subnets provide flexibility to a network by dividing a large network into smaller units, so that the entire network is not restricted by one network address. Subnet masking is performed by borrowing bits from the host portion of the assigned network address, so that more routable network addresses may be assigned within the network address. Variable-length ...
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